Results 201 to 210 of about 1,482,535 (355)

O13: Clinical utility of prenatal cell-free DNA screening for chromosomal aneuploidies in low risk pregnancies after euploid embryo transfer

open access: yesGenetics in Medicine Open
Mitko Madjunkov   +7 more
doaj   +1 more source

Graduating the age-specific fertility pattern using Support Vector Machines [PDF]

open access: yes
A topic of interest in demographic literature is the graduation of the age-specific fertility pattern. A standard graduation technique extensively used by demographers is to fit parametric models that accurately reproduce it.
Alberto Olivares   +3 more
core  

Nanocore Shells for Effective Collection of Photocurrent in Polymer Solar Cell

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Organic solar cells have emerged as one of the possible solar cell technologies to fabricate low‐cost and lightweight solar panels. The use of metal nanoparticles in the functional layers of thin‐film organic solar cells is found to be beneficial to improve charge transport processes in the medium.
Abdallah Y. A. Ahmed   +1 more
wiley   +1 more source

On the impossibility of inferring cohort fertility measures from period fertility measures [PDF]

open access: yes
A particularly important struggle faced by demographic analysts is, how to arrive at statements about family formation processes from a cohort perspective from data that are essentially collected on an annual basis.
Evert van Imhoff
core  

The effects of agricultural machinery services and land fragmentation on farmers' straw returning behavior

open access: yesAgribusiness, EarlyView.
Abstract Straw returning is important for rural ecological management and sustainable agricultural development. Using farm survey data for Anhui Province, China, in 2020, we applied the double‐hurdle model to investigate the impact of agricultural machinery services and land fragmentation on farmers' straw‐returning behavior, and to explore the ...
Xin Wang, Yanping Song, Wei Huang
wiley   +1 more source

Overview Chapter 7: The rising importance of migrants for childbearing in Europe [PDF]

open access: yes
This contribution looks at the influence of immigration on childbearing trends in the countries of Western, Northern and Southern Europe, which have received relatively large numbers of immigrants during the last decades.
Tomas Sobotka
core  

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